#pragma once
#include "bieuthuc.h"
#include <string>
class DonThuc :
	public BieuThuc
{
private :
	float m_heSo;
	float m_soMu;

public:
	BieuThuc& khoitao(float *x,int i);
	string bieuDien();
	string bieuDienDaoHam();
	float tinhGiaTri(float x);
	float tinhDaoHam(float x);
	DonThuc();
	DonThuc(float,float);
	~DonThuc();
};
